Question

how many moles are there in 9.86x10^25 molecules of co2?

Answer 1

Answer:

164moles

Explanation:

Given parameters:

Number of molecules of CO₂   = 9.86 x 10²⁵molecules

Unknown:

Number of moles  = ?

Solution:

To solve this problem, a mole of any substance contains the Avogadro's number of particles.

In that;

        6.02 x 10²³ molecules makes up 1 mole of a substance

        9.86 x 10²⁵molecules   contains $\frac{9.86 x 10^{25} }{6.02 x 10^{23} }$   = 1.64 x 10²moles

The number of moles is 164moles